Vaporizing device for internal combustion engines



1933- P. w. EASTHOPE El AL 1,935,229

VAPORIZING DEVICE FOR INTERNAL COMBUSTION ENGINES Filed Jan. 25, 1933INVENTORS PERCY WILLIAMS EAST/mp5 GEORGE EASTHOPE BY I ATTORNE Y5Patented Nov. 21, 1933 UNITED STATES- 1,936,229 7 VAPORIZING. DEVICE FORINTERNAL v COMBUSTION ENGINES Percy Williams Easthope andGeorgexEasthope, Vancouver, British Columbia, Canada Application January25, 1933. Serial No. 653,390

8 Claims. (01. 123-191) It is common in-engines using the heavier gradesof fuel to have improper combustion and to pass an indefinite quantityof said fuel down thecylinder Walls into the crank case where oildilution of a more orless serious nature develops and the power contentof the fuel oil is largely wasted. It is with a View to overcomingthis'seriou's trouble that, the present'device isdesigned, viz: toprovide means for vaporizing the fuel at the point of combustion that itis entirely consumed on the firing stroke, so that its full thermalefiiciency is obtained and the greatest fuel economy is attained, toprevent oil dilution and thus increase the life of the engine and effecteconomies in the lubrication also.

The invention consists essentially of a vaporizer or apertured baliieplate mounted in the. combustion head of the engine and disposed betweenthe point of fuel intake and the piston head, as will be more fullydescribed in the following specification and shown in the accompanyingdrawing, in which:-

Fig. 1 is a sectional view of the combustion chamber of an internalcombustion engine showing the invention.

Fig. 2 is a plan view of the invention Fig. 3 is a diagrammatic Viewshowing the flow through the intake ports to the combustion space of thecylinder.

Fig. 4 is a diagrammatic view showing the flow of exhaust gases fromcombustion space of the cylinder to the exhaust port.

In the drawing like characters of reference indicate corresponding partsin each figure.

The numeral 1 indicates generally a cylinder having a cylinder head 2provided with intake and exhaust valves 3 and 4 respectively in theusual Way. The numeral 5 indicates the cylinder walls, 6 the-waterjacket and 7 a spark plug.

' The numeral 8 indicates the counter bore of the cylinder or. thatportion which is above the normal travel of the piston 9. Fitted in thecounterboreS of the cylinder 1, either by force fit or by attachment tothe cylinder head 2, is a vaporizer generally indicated by the numeral10, which vaporizer is preferably formed. with a sleeve 11 which is inintimate'contact with the walls of the cylinder and an annular baflieplate 551 12 which is in the form of an inverted truncated cone. Withinthebase of the cone is an upstand ing collar 13 and extendingradiallyfrom the collar to the sleeve 11 is a plurality of radial webs 14 todefine between them a plurality of segmental pockets 15 each having asubstantially central orifice 16in the baffle plate which is providedwith slightly'upturned marginal edges 1'7.

The number of 'webs 14 and the number of pockets 15 and also" thethickness of material used will depend on the size and nature of the65.- engine to which the vaporizing device is fitted. The Webs form amediumfor transmitting surplus heatfrom the balile to the waterjacketted or other cylinder walls and are such as to permit therecurrent firing of the combustible charges to maintain the vaporizingdevice at such temperature as to promote efficient vaporization of thefuel oil. v t

As a desirable adjunctto the vaporizer 10, but not an essential, Weprovide between said bafile and the cylinder head a flanged plate 18having apertures 19 and 20 of 'the" same size as and registering withthe heads of the intake and exhaust valves 3 and 4 respectively; theplate being set at such a distance from the cylinder head that each ofsaid valve heads close of]? their respective apertures when in full openposition. Below the plate 18 and extending in a curve from said plateacross the aperture 19 is a deflector 21.

The oil on entering the cylinder through the 8 5- intake valve 3 is notusually sufficiently reduced to a state of high division as to promotecom- 7 plete combustion and certain globules of wet fuel pass into thecylinder. These globules are entrapped on the .bafile plate 12 and uponthe webs 14, which being heated to an appreciable extent raise theirtemperature, so that the piston movement and the gaseous disturbanceincidental thereto causes said globules to break up and combine with theair content, thus producing a highly combustible gas which is readilyignited and completely consumed, it also serves to prevent any globulesof wet oil from passing downwards onto the cylinder walls and into thecrank case, thus the whole of the oil admitted is vaporized andconverted into combustible gas and the ut- Y most thermal efiiciency isobtained therefrom. Where the apertured plate 18 is used, which isobviously only on engines having direct overhead'valves', as the inletvalve, initially opens, or 1 during its travel to full open position,the incoming charge follows the line of least resistance and to someextent passes through the aperture 19 where it is defiected laterallyacross the vaporizer 10, so that any unbroken fuel. lobules are drawnaway from the cylinder wall adjacent said aperture, as the valve reachesits full open position, see Figure 3, the gas flow is directed acrossthehead of the exhaust valve 4, this gas being relatively cool reduces thetemperature of the exhaust valve and absorbs heat therefrom whichpromotes evaporation of the charge.

When the exhaust valve 4 is moving to full open position the exhaustgases from the engine flow through both apertures 19 and 20, butimmediately the exhaust valve reaches full open position and registerswith the aperture 20 of the plate 18, as shown in Figure 4', the exhaustgases flow through the aperture 19 past the head of the inlet valve 3raising its temperature and losing some of its heat in so doing, thencepassing out past the exhaust valve 4.

It will be obvious that the use of the plate will serve to equalize thetemperature of the valves 3 and 4, raising the temperature of the formerand reducing the temperature of the latter to the benefit of both. v

What we claim as our invention is:

I. The combination with an internal combustion engine cylinder, of avaporizing device comprising an annular bafiie extending'inwardly fromthe side walls of the cylinder whereby liquid fuel is prevented frompassing downwardly along said' side walls towards the piston and anupstanding collar. along the inner peripheral edge of said bafile.

2. A vaporizer for internal combustion engines comprising an annularbafile adapted for insertion into the combustion head of a cylinder andcombustion head of a cylinder, said bailie being divided into aplurality of pockets each having a bottom opening, each of said pocketshaving an upstanding collar surrounding the bottom opening and beingremote from the pocket side walls.

4. A vaporizer for internal combustion engines comprising a battleadapted for insertion into the combustion head of a cylinder, saidbaffle being divided into a plurality of pockets each having a bottomopening, each of said openings being bordered by an upturned rim. 7

5. A vaporizer for internal combustion engines comprising a bafile inthe form of an inverted truncated cone and having an upstanding rimabout its inner periphery.

6. The combination with an internal combustion engine having a cylinderand head in which latter inlet and exhaust valves are movable parallelto the piston movement and-a plate extending across the cylinderadjacent the end of the valve stroke, said plate having aperturesadapted to be closed by each of said valves when in full open position.

7. The combination with an internal combustion engine having a cylinder,a head, a piston and inlet and exhaust valves movable parallel to thepiston movement, and a baflie extending across the bore of the cylinder,said bafiie having an aperture adapted to be closed off by the head ofthe inletvalve whensaid valveis in full open position.

8. The combination with an internal combustion engine having a cylinder,ahead, a piston and inlet and exhaust valves movable parallel to thepiston movement and a baifie extending across the bore of the cylinderhaving apertures registrable with the heads of the valves when in fullopen position whereby a charge of gas entering through the inlet valveis directed across

